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authorTony Nguyen <tony.nguyen@bt.com>2019-08-24 04:36:52 +1000
committerRichard Henderson <richard.henderson@linaro.org>2019-09-03 08:30:39 -0700
commitd5d680cacc66ef7e3c02c81dc8f3a34eabce6dfe (patch)
treef9738bf1ce601181a99be6c090f597fd6112b117 /memory.c
parent07f0834f264a79d6225202bd35ca37f74afb8df1 (diff)
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memory: Access MemoryRegion with endianness
Preparation for collapsing the two byte swaps adjust_endianness and handle_bswap into the former. Call memory_region_dispatch_{read|write} with endianness encoded into the "MemOp op" operand. This patch does not change any behaviour as memory_region_dispatch_{read|write} is yet to handle the endianness. Once it does handle endianness, callers with byte swaps can collapse them into adjust_endianness. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Tony Nguyen <tony.nguyen@bt.com> Message-Id: <8066ab3eb037c0388dfadfe53c5118429dd1de3a.1566466906.git.tony.nguyen@bt.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'memory.c')
-rw-r--r--memory.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/memory.c b/memory.c
index 3d87908..d72143a 100644
--- a/memory.c
+++ b/memory.c
@@ -3285,3 +3285,21 @@ static void memory_register_types(void)
}
type_init(memory_register_types)
+
+MemOp devend_memop(enum device_endian end)
+{
+ static MemOp conv[] = {
+ [DEVICE_LITTLE_ENDIAN] = MO_LE,
+ [DEVICE_BIG_ENDIAN] = MO_BE,
+ [DEVICE_NATIVE_ENDIAN] = MO_TE,
+ [DEVICE_HOST_ENDIAN] = 0,
+ };
+ switch (end) {
+ case DEVICE_LITTLE_ENDIAN:
+ case DEVICE_BIG_ENDIAN:
+ case DEVICE_NATIVE_ENDIAN:
+ return conv[end];
+ default:
+ g_assert_not_reached();
+ }
+}